Electrically-operated gold-beating machine.



M. M. KUPPERSTEJN.

ELECTRICALLY OPERATED GOLD BEATING MACHINE. APPLICATION FILED DEC. 23, 1914. RENEWED NOV. 23. 1911.

Patented Jan. 1,1918.

2 SHEETS-SHEET 1.

1111111111111 IIIIJIIIIIIIIIIIIIIIIIII11 Q. Q Q 000 02 292 M. M. KUPPERSTEIN. ELECTRCALLY OPERATED GOLD BEATING MACHINE. APPLICATION men DEC. 23, 1914. RENEWED NOV. 23. 1911.

Patented Jan. 1, 1918.

2 SHEETS-SHEET 2- IIIII'I [H /l V I: VIE/7Y5 4 3 WJ OOVQO 00 00 00000000 000 m vvvvvvvvvw? u a 0 6 L. a 4Q l- 7 v$fi a w "00000 00 3 0 M0 v vvvvvvxfi 5 N 2 v .0 0 0 0 0 0 0 0 0 0 0 0 0 0 m 0 0 0 0 0 040 0 0 0 H v 2 J am M f 1 f MORRIS M. KUPPERSTEIN, OF HARTFORD, CONNECTICUT.

ELECTBICALLY-OPERATED GOLD-BEATING MACHINE.

Specification of Letters Patent.

Patented Jan. 1, 1918.

Application filed December 23, 1914, Serial No. 878.689. Renewed November 23, 1917. Serial No. 203,626.

To all whom it may concern:

Be it known that I, MORRIS M. KUPPER- STEIN, a citizen of theUnited States, residing at Hartford, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Electrically Operated Gold Beating Machines, of which the following is a specification.

This invention relates to electrically operated gold beating machines. Gold is generally beaten by hand. In some'instances the result has been accomplished mechanically. \Vhen done in the latter way several machines have been so far as I am aware, indispensably requisite. One of the principal objects of the invention is the provision of an apparatus of the kind set forth by which a pad as it is known of gold can be reduced to the requisite thinness or rade in one machine or without removing 1t from its base, support or anvil.

In the drawings accompanying and forming part of the present specification I have shown in detail one convenient form. of embodiment of the invention which will be set forth fully in the following description. I do not restrict myself to this exact disclosure; I may depart therefrom in several respects within the scope of the invention defined by the claims following said description.

Referring to said drawings:

Figure 1 is a sectional side view of a gold beating machine involving my inven tion.

Fig. 2 is a transverse section on the line 2-2 of Fig. 1.

Fig. 3 is a vertical section of the upper portion of the solenoid with a removable tube and hammer therein.

Fig. 4 is a practically similar view showingza different form of tube.

ig. 5 is a transverse section on the line 55 of Fig. 4.

Fig. 6 is a diagram of circuit connections, and,

Figs. 7 and 8 are views of contact elements hereinafter more particularly described.

Like characters refer to like arts throughout the several figures of the rawings which are on different scales.

The gold in the form of a pad as it is known, is put upon a suitable bed such as 2, which generally consists of a block of stone such as marble, the hammer or ram delivering its blows to the stock on the upper surface of said base or bed. The hammer is electrically operated, and for this purpose the solenoid 3 may be provided, the solenoid being preferably of such character as to reciprocate the hammer or ram such as 4 which constitutes the armature. of the solenoid. The solenoid of Figs. 1, 2, 3, 4 and 5 is the same, but as will hereinafter appear, hammers of different sizes can be associated with said solenoid. In Figs. 1 and 2, the hammer 4 is shown; the hammers of the other views will be hereinafter described. The two coils of the solenoid 3 are denoted by 5 and 6 respectively, the coil 5 when energized serving to advance or to impart a working stroke to the hammer 4 or one of a similar character, while the coil (5 retracts or elevates the hammer or ram, circuit controlling means be ing provided to alternately make and break the circuits of the two coils as will hereinafter more particularly appear. The hammer i as shown is non-rotative yet removably mounted within the tube 7 of the sole-, noid. This non-rotative relation can be secured in various ways: for instance, by making the hammer of polygonal form in cross section to fit the correspondingly shaped opening of the tube, shell or lining 7 of said solenoid. the hammer comparatively closely yet slidingly fitting said tube. As illustrated the hammer is of hexagonal form, said tube interiorly being of corresponding shape, a simple and efiective way of insuring non-rotation of the hammer or armature 4. The solenoid 3 is held stationary, being supported by and extending through the shelf 8. The hammer or ram 4 is shown having a perforation 9 near its upper end through which a nail or pin can be passed when the hammer is elevated. the pin at such time being adapted to overlie the upper edge of the solenoid coreto maintain the hammer in said elevated condition.

The tube or lining 7 and the removable tube or lining 28 are both made of nonmagnetic material such as brass. The armature of the solenoid is made of magnetic material such as iron.

The source of electrical energy for the solenoid tiniaybo of any-desirable nature, for instance the battery 10. From. one pole of the battery the wire 11 extends, being electrically connected with the contact finger 1:2 fastened to the shaft 13, said contact finger l2 rotating in the stationary contact ring 1 1. From the said contact ring 11 the wire 15 extends being connected with the lower terminal of the coil (3 from the upper terminal of which the wire 17 extends, the wire 17 being connected with the battery 10 at the side opposite that to which the wire 11 is connected. In the present instance the coil 6 when energized raises the hammer 4c. The rotary contact finger 18 in the stationary contact ring 19 is connected as by the wire 20 with the battery 10. said contact ring 19 being connected by the wire 21 with the lower terminal of the coil 5, the upper terminal of which is connected with the battery opposite the connection of the wire 20 therewith by the wire 21, the contact finger 18 being also fastened to the shaft 13. As seen the two contact fingers 12 and 18 are 180 degrees apart or diametrically opposite. The shaft 13 may be rotated in any desirable manner, for instance by the pulley 22 receiving its motion from the belt 23 operated by a pulley not shown. Each of the contact rings 14 and 19 comprises two concentric portions, one effective and the other ineffective, the ineffective portions being located greater distances from the centers of the rings than the effective portion thereof, which latter are adapted to be engaged by the respective rotary fingers. In Fig. 7 the tip of the finger 12 is shown as being against the effective part of the ring 1 1, the consequence being that the circuit of the upper coil 6 is closed to energize said coil and therefore. lift and maintain elevated the hammer 4. \Vhen the tip of the finger 12 passes from off the effective portion of the ring 14 the circuit of said coil 6 will be broken, so that the hammer may be lowered when the tip of the finger 18 passes upon the effective portion of the stationary contact ring 19. Each of the contact rings 14 and 19 is provided with a segmental member 24: adjustably connected therewith constituting an extension of the effective portion thereof and engageable by the respective contact fingers, by reason of which the length of time which the hammer is raised or lowered may be varied. Each of the segmental extensions 21 has an arcuate slot 25 to receive a binding screw 26 to hold said segments 24 in their adjusted positions. The parts are so proportioned that just about the time a. finger passes ofi? the effective portion of its ring the other finger will engage the effective portion of its ring.

As may be understood I do not depend upon the strength of the current to vary or regulate the blow upon the article, but for this purpose provide for the removability of the hammer, by virtue of which hammers of ditl'erent grades or weights can be interchangeably associated with the solenoid 3. In Fig. 1 the heaviest hammer is connected with the solenoid. In Fig. 3 I have shown a hammer 27 of a smaller size. The ham mer 27, howerer, does not directly fit into the tube or lining 7 of said solenoid 3 but is removably disposed in the tube 28 which is removably mounted in said tube or lining 7 and the upper end of which has a flanged cap or head 25) to fit over the upper extended ends of the tube or lining T to thus securely position the removable tube 23. The tube 28 and hammer 27 are in the construction shown, both of hexagonal form, the tube or lining 7 of the solenoid 3 being sized to closely receive the insertible tube In Fig. 1 I have shown a still smaller hammer 30 which fits the tube 31 disposed removably in the tube. or lining 7 of the solenoid 3. The upper end of this tube 31 has a flanged cap to fit the upper projec'ting end of the tube or lining 7 of said solenoid 3, the tube 31 between its ends having one or more flanges as 33 to snugly fit within said solenoid tube or lining 7. In the construction shown the tube 31 is internally and externally of hexagonal form and the flange 33 is of hexagonal shape to fit the interior of the hexagonal solenoid tube or lining 7. It will be evident. that both tubes 28 and 31 are securely held in position each constituting an auxiliary solenoid tube or lining. To vary the speed of the hammer I can increase or decrease the speed of the shaft 13.

It is not new with me to hammer because this has been mechanically accomplished heretofore. In the prior art, however, it has been necessary to use several machines to reduce a .piece of stock to the necessary thickness, the machines having hammers of different sizes. The stock is first subjected to the action of a hammer of small size in one machine, then subjected to the action of a larger size hammer in a second machine and so on, the object being to mechanically accomplish what had been secured by hand. In hammering gold by hand hammers of different grades are utilized, the gold being initially brought under the action of a small hammer, then a size larger and so on until it is brought to the desired thinness. I secure the same results that have been obtained both mechanically beat gold with a from one end thereof, a tube removably situated in the lining, having a cap fitted over said projecting portion, and a. hammer disposed in the tube, constituting the armature of the solenoid, the capped end of the tube having an opening through which the armature extends when in one of its attracted positions.

2. In a machine of the class described, a solenoid provided with a lining projecting from one end thereof; a tube removably situated in the lining having a cap fitted over said projecting portion of the lining and also flanged between its ends to engage the inner surface of the lining, and a hammer slidable in the tube, constituting the armature of the solenoid and extending through 

